megatall means A building approximately between 600 meters and 900 meters tall, (between 2000 feet and 3000 feet tall). A building taller than a supertall. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
Etymology
From mega- + tall.
noun
- A building approximately between 600 meters and 900 meters tall, (between 2000 feet and 3000 feet tall). A building taller than a supertall.